Fastening device.



No. 862,898. PATENTED AUG. 13, 1907. W. D. FORSYTH.

FASTENING DEVICE.

APPLICATION FILED MAY 11, 1907.

2 SHEETS-SHEET 1.

TIE El- No. 862,898. PATENTED AUG. 13, 1907. W. D. FORSYTH.

FASTENING DEVICE.

APPLIOATION FILED MAY 11, 1901.

2 SHEETS-SHEET 2.

TIE .4-

@itunssvs: Enurutnr m is WXSX or$\: M fiwluramok UNITED STATES PATENTOFFICE. v

WILLIAM D. FORSYTH, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO TRUSSEDCONCRETE STEEL COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

FASTENING DEVICE.

Noseases.

Specification of Letters Patent.

Patented Aug. 13, v1907.

' Application filed May 11,1907. Serial No. 878,187.

To all whom it may concern:

Be it known that I, WILLIAM D. FORSYTH, a citizen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Fastening Device, of whichthe following is a specification.

My invention relates to means forsecuring bolts, pins and spikes firmlyin operative position, and the object of my improvements is to providesafe, reliable and comparatively inexpensive means whereby rails may besecured to cross-ties, steel beams may be secured together and otherobjects fastened together under conditions that do not permit the use ofthreaded bolts or other well known assembling devices.

My invention consists of a sleeve of stiff, hard material, resilientengaging device mounted therein, and a bolt, p'inor spike adapted to bedriven into the engaging device.

It consists further in forming the sleeve of proper material so that thebolt, pinor spike may be insulated from the body surrounding the sleeve.

In the accompanying drawings which illustrate my invention, Figure 1shows a portion of rail road tie with a section of rail secured theretoby my improved fastening device. Fig. 2 is a longitudinal cross sectionand Fig. 3 an end view showing another form of fastening device. Fig. 4is a longitudinal cross section showing a third form of the device. Fig.5 is an end view of the sleeve and spring. Fig. 6 is a view of the formshown in Fig. 1 adapted for fastening two steel beams together. Fig. 7is a cross section on the line A-B of Fig. 6. Fig. 8 is a view ofanother form of fastening device for the same purpose. Fig. 9 is a crosssection on the line OD of Fig. 8.

Similar reference characters refer to like parts throughout the severalviews. I

In the following description, the term spike will be employed todesignate any form of bolt, pin or spike that can be driven into asocket, whatever may be its cross section or the shapeof its head.

In Fig. 1 of the accompanying drawings, 1 is the end of a concrete crosstie and 2 a rail. A sheet 3 of any resilient material may be placedbetween the rail and tie, and if the rail is to be used on a track usinga block signal systemflhis plate may be of insulating material. Tubes orsleeves 4 of moderately hard, resilient material, indurated fiber orhard wood preferred, are either molded in the tie or are driven intoholes formed therein. A spring 5 is placed in each sleeve, the normaloutside diameter of the spring being that of the bore of the sleeve. Apointed spike 6 whose diameter is somewhat greater than the innerdiameter of the spring is driven into the same to hold the rail inposition.

When the spike is driven down, the spring opens and its coils are forcedinto the material of the sleeve. The grip of the spring on the spike issuflicient to insure its being held in position. The spike will be heldas firmly by this fastening device as it would be if driven into a goodoak tie. I

Where the rails are' held down against cross ties -by means of bolts,the ignorant track hand often strains the bolt through turning down thenut too hard. Any unusual stress on the bolt, such as is often set up bythe swaying of a heavy locomotive under high speed, causes the bolt tobreak. By using'my improyed fastening device this source of danger isobviated as the spikes are driven down until the head bears on the railflange, and any additional blows result in the head being batteredslightly and nothing more. Coal tar may be poured into the sleeve aroundthe bolt and spring if desired.

Instead of a coil spring 5, a flat strip of sheet spring steel may beformed in the manner shown in Figs. 2 and 3, the resulting spring 7having the same fastening characteristics as the spring 5.

The usual rail spike 9 now in use is shown in Fig. 4 and is square incross section. The sleeve 10 will also be rectangular, and the fastenermay be formed from two strips 11 of corrugated metal, bent so as tofitthe sleeve and crossing each other at the bottom. The two strips may besecured together by a rivet 12, if desired. The ridges of thecorrugations of the springs are transverse to the faces of the spike,and the grip on the same is so great, that when the parts are properlyproportioned, it is' almost impossible to withdraw the spike. Ifdesired, the number of these corrugated springs may bevaried.

Where the shape of the body of the supporting member renders the formingof a socket for the sleeve impossible, as inthe I beams shown in Figs. 6to 9 inclusive, I may secure cheeks 14 to the I beam 15 by means of thebolts 16 passing through the flanges 17 of the cheeks. The sleeves 4,springs 5, and spikes 6 will be the same as before described, andstructural member 18 will be securely held in position; Instead of thisconstruction I may secure sleeves '19 in the flanges of the beam 20, thesleeves being of metal tubing. The springs 5 and spikes 6 will retainthe beam 18 in posi tion.

In Fig. 1 I have shown means for securing a rail to a concretecross-tie. It will be evident that the same means-may be employed tosecure any object or machine to a concrete structure which has usuallybeen bolted thereto. The disks 21 and 22 at the ends of the sleeves maybe omitted if desired.

Having now explained my improvements, what I claim as my invention anddesire to secure by Letters Patent is,

1. A fastening device, comprising a. sleeve adapted to fit an aperturein a support, a spring in said sleeve, and

retaining means adapted to be driven into said sleeve in engagement withthe spring.

2. A fastening device, comprising a sleeve of resilient material adaptedto fit an aperture in a support, a spring in said sleeve, and retainingmeans adapted to be driven into said sleeve in engagement with thespring.

3. A fastening device, comprising a sleeve of. resilient fibrousmaterial, a spring fitting therein, and a spike adapted to be driveninto the spring.

4. A fastening device comprising a sleeve whlchis a non-conductor ofelectricity, a coiled spring fitting there in, and retaining meansadapted to be driven into said sleeve into engagement with said spring.

5. A fastening device comprising a supporting body 15 having anaperture, a spring in said aperture; and a fastening device adapted tobedriven-into the'spring.

In testimony whereof I have signed my name in the presence of twosubscribing witnesses.

WILLIAM D. FOitSiZTH. Witnesses J. J. HAMILTON, W. BENNETT McELwAY.

